There were a record 430 lesbian, gay, bisexual and transgender candidates this year running for office at every level of government, almost entirely on the Democratic side.
Texas' 21st Congressional District has been solidly in Republican hands for decades, but an incumbent's retirement is sparking talk on the ground of a possible close race in a wave year.
President Trump is campaigning heavily to boost GOP candidates in the midterm elections, speaking at rallies nearly every week. NPR reporters and editors annotated his 2018 campaign message.
GOP candidates are trying to prove they're with President Trump on immigration. But Arizona's late primary means little time to shift to the general election, when Democrats hope to flip the seat.
Wisconsin Democrats are trying to re-elect Sen. Tammy Baldwin and unseat Gov. Scott Walker. African-Americans are a key part of the coalition necessary to do so.
The Democratic congressman is challenging GOP Sen. Ted Cruz. He's making a bet that firing up liberals is the way to win, instead of running to the center like other Democrats in red states.
Republicans say North Dakota Sen. Heidi Heitkamp's emphasis on her points of agreement with Trump won't wash away the fact that she's a Democrat in a solidly red state.
Taking a page from their own 2006 playbook, House Democrats hope to capitalize on the insider trading allegations against Rep. Chris Collins and other GOP scandals to regain a majority in November.
In one of his most high-profile appearances since leaving the White House, former President Barack Obama urged listeners to resist cynicism as he celebrated the legacy of Nelson Mandela.